WO2006057255A1 - 軟質ポリウレタンフォーム、その製造方法、および自動車用シート - Google Patents
軟質ポリウレタンフォーム、その製造方法、および自動車用シート Download PDFInfo
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- WO2006057255A1 WO2006057255A1 PCT/JP2005/021480 JP2005021480W WO2006057255A1 WO 2006057255 A1 WO2006057255 A1 WO 2006057255A1 JP 2005021480 W JP2005021480 W JP 2005021480W WO 2006057255 A1 WO2006057255 A1 WO 2006057255A1
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- polyurethane foam
- flexible polyurethane
- polyol
- deflection
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
- C08G18/4841—Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
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- C—CHEMISTRY; METALLURGY
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7607—Compounds of C08G18/7614 and of C08G18/7657
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2350/00—Acoustic or vibration damping material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/06—Flexible foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
Definitions
- the present invention relates to a flexible polyurethane foam, a method for producing the same, and an automobile seat.
- a seat cushion a combination of a pad material made of a metal panel and a flexible polyurethane foam (hereinafter referred to as a flexible foam) has been widely used.
- a flexible foam a combination of a pad material made of a metal panel and a flexible polyurethane foam (hereinafter referred to as a flexible foam) has been widely used.
- a full-foam type automobile seats that have abolished metal panels by giving panel characteristics to flexible foams themselves, such as cost down and light weight.
- the full-form sheet is thick because it does not use a metal panel.
- the characteristics of the flexible foam have become a major factor in seat comfort and riding comfort.
- static and dynamic characteristics which are indicators of sitting comfort and riding comfort, have come to be emphasized in the development of flexible foam.
- This static characteristic Is a test method for measuring the amount of deflection and obtaining a load-deflection curve in a load test based on the performance test method for the pad material of automobile seats of JASO Automotive Standard B408-89 (1989 edition).
- the deflection value obtained when applying a 500N load (Newton load) that also obtained the load-deflection curve force obtained by measurement using a pressure plate in accordance with JIS E7104 (2002 edition) may be used.
- This pressure plate has an oval shape with a major axis A: 300 mm, a minor axis B: 250 mm, and a thickness C: 35 mm or more, and is called a so-called Tekken type.
- polyoxyalkylene polyols that are generally used as raw materials for flexible foams are prepared by using propylene with an initiator such as a polyhydric alcohol in the presence of a sodium Z potassium catalyst such as sodium hydroxide or potassium hydroxide. It is produced by ring-opening polymerization of an alkylene oxide such as an oxide.
- an unsaturated monool having an unsaturated bond hereinafter simply referred to as monool
- the amount of this monool generated is an increase in the molecular weight of the polyoxyalkylene polyol (decrease in the hydroxyl value). ) Increase with
- Elastic polyurethane foams represented by the full-foam type produced using a polyoxyalkylene polyol with a low monool content have extremely high impact resilience. As a result, it has been proved that the ride comfort is inadequate from the standpoint of posture maintenance and support for the occupant during traveling.
- an invention has been proposed in which the resilience modulus is suppressed by using a polyoxyalkylene polyol having a low degree of unsaturation and a low molecular weight polyoxyalkylene polyol having a hydroxyl value of 90 to 300 mgKOHZg.
- Patent Document 2 the relatively high durability point of 25% to 33% of the hysteresis loss was disadvantageous.
- the load deflection characteristic is greatly influenced by the soft foam itself. Therefore, when the load deflection amount when pressed from above by the pressure plate is measured.
- the pressure side is 500N to 900N, and the sheet has a relatively small deflection difference. Seats with a small difference in deflection have a feeling of bottoming, and the evaluation of ride comfort tends to be poor. For this reason, full-form sheets have been handled by increasing the thickness of the foam in order to increase the deflection difference.
- Patent Document 3 As a technique for increasing this difference in deflection without increasing the thickness of the foam, the use of a fluorosurfactant having a perfluoroalkyl group structure has been proposed (Patent Document 3). However, it has been pointed out that the effect varies depending on the structure of the fluorosurfactant.
- Patent Document 4 a method using 0.003 to 2 parts by mass of dimethylpolysiloxane based on 100 parts by mass of a polyether is known (Patent Document 4).
- the degree of polymerization (molecular weight) of dimethylpolysiloxane it was not possible to use dimethylpolysiloxane with a degree of polymerization of more than 10 in the production of foam. Even when dimethylpolysiloxane having a polymerization degree of 10 or less was used, it was difficult to produce a stable foam.
- a flexible polyurethane foam having a reduced resonance magnification a flexible polyurethane foam manufactured using a silicone-based foam stabilizer whose main component is a dimethylpolysiloxane is known (patent document). 5, 6).
- the silicone foam stabilizer is a mixture of dimethylpolysiloxane and a plasticizer, and the plasticizer occupies about 90% by mass, the effect actually obtained is the power of dimethylpolysiloxane. It is not clear whether the effect is due to the combined use of plasticizers! /.
- Patent Document 7 This technique is particularly applied to integral skin foam, and is greatly different from the contents of the present invention.
- Patent Document 1 Japanese Patent Laid-Open No. 7-330843
- Patent Document 2 Japanese Patent Laid-Open No. 11-60676
- Patent Document 3 Japanese Patent Laid-Open No. 11-322875
- Polymer polyoxyalkylene polyol or the polymer polyoxyalkylene A flexible polyurethane foam in which a polymer-dispersed polyol containing fine polymer particles in a polyol and a polyisocyanate compound are reacted in the presence of a catalyst, a foaming agent, and a foam stabilizer.
- a method for producing a flexible polyurethane foam wherein the compound represented by the above formula (1) is used in an amount of 0.0001 to 1 part by mass with respect to 100 parts by mass of all active hydrogen compounds.
- the flexible polyurethane foam preferably has a core density of 30 to 70 kgZm 3 .
- 500N caloric pressure obtained from a load-deflection curve measured using a pressure plate (Iken type) conforming to JIS E710 4 (2002 edition) for flexible polyurethane foam obtained by foaming to a thickness of 100mm ⁇ J deflection force 5. 0 to 55. 900N calo pressure at Omm ⁇ Subtraction value of 500N pressure side deflection value from deflection value of J (pressure side deflection difference) Y (mm) force Is 25.5 to 33. Omm.
- the flexible polyurethane foam of the present invention is excellent in vibration characteristics and load deflection characteristics.
- the automotive seat of the present invention is a seat that is excellent in posture retention and support feeling, has little bottoming feeling, and is comfortable to sit on.
- the flexible polyurethane foam of the present invention is obtained by reacting a polyol and a polyisocyanate compound in the presence of a catalyst, a foam stabilizer and a foaming agent.
- the polymer polyoxyalkylene polyol used in the production of the flexible polyurethane foam of the present invention is preferably obtained by ring-opening addition polymerization of a cyclic ether as an initiator in the presence of a ring-opening addition polymerization catalyst.
- the average number of hydroxyl groups of the polymer polyoxyalkylene polyol is the average number of hydroxyl groups of the initiator used.
- the high molecular weight polyoxyalkylene polyol has a hydroxyl value measured in accordance with JIS K-1557 and a molecular weight converted using the following formula.
- the ring-opening addition polymerization catalyst examples include alkali metal compounds such as potassium compounds (hydroxide potassium, potassium methoxide, etc.), cesium compounds (cesium metal, hydroxide cesium carbonate, cesium carbonate, cesium methoxide, etc.). Catalysts; Cationic polymerization catalysts (boron trifluoride, etc.); Double metal cyanide complex catalysts: Phosphaze-um compounds, etc.
- a complex metal cyanide complex catalyst is particularly preferred in order to obtain a polyoxyalkylene polyol having a large molecular weight that is preferred by an alkali metal compound catalyst or a complex metal cyanide complex catalyst. .
- a double metal cyanide complex catalyst since it has a high polymerization activity, a complex mainly composed of zinc hexanocobaltate has a high activity which is preferable. Or an alcohol complex is particularly preferable.
- ethers ethylene glycol dimethyl ether (glyme), diethylene glycol dimethyl ether (diglyme), monoethylene glycol mono-tert-butyl ether (METB), etc. are preferred, so that glyme and METB are particularly easy to handle. preferable.
- tert-butyl alcohol is particularly preferred because a highly active catalyst can be obtained.
- the amount of the double metal cyanide complex catalyst used is preferably 0.001 to 0.05 parts by mass with respect to 100 parts by mass of the resulting polyoxyalkylene polyol. Further, the force of being economically advantageous is particularly preferably 0.001 to 0.03 parts by mass. On the other hand, the amount of alkali metal compound catalyst used depends on the polyoxyalkylene polyol obtained. The amount is preferably 0.1 to 0.5 parts by mass with respect to 100 parts by mass.
- Examples of the initiator include ethylene glycol, diethylene glycol, dipropylene glycol, neopentyl glycol, 1,4 butanediol, 1,6 hexanediol, glycerin, trimethylolpropane, pentaerythritol, diglycerin, dextrose, Examples thereof include sucrose, bisphenol A, and the like, or compounds obtained by adding a small amount of alkylene oxide thereto. Two or more initiators may be used in combination.
- the number of active hydrogens in the initiator is preferably 2-6. By setting the number of active hydrogens to 2 or more, the durability of the flexible polyurethane foam and the ride comfort of the seat cushion are improved. By setting the active hydrogen number to 6 or less, the flexible polyurethane foam does not become hard and mechanical properties such as elongation become good.
- an alkylene oxide having 2 or more carbon atoms is preferred.
- the alkylene oxide having 2 or more carbon atoms include ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3 butylene oxide, styrene oxide and the like. Of these, a combination of ethylene oxide and at least one selected from propylene oxide, 1,2 butylene oxide, and 2,3 butylene oxide is particularly preferable.
- the polyoxyalkylene polyol preferably has an oxyethylene group in the middle of the molecular chain and at the Z or molecular end, and particularly preferably has an oxyethylene group at the molecular end.
- polyoxyalkylene polyol having an oxyethylene group in the middle of a molecular chain for example, one of alkylene oxide or ethylene oxide having 3 or more carbon atoms is subjected to ring-opening addition polymerization and then the remaining one is opened.
- a polymer having an oxyethylene block chain in the middle of a molecular chain obtained by addition polymerization and finally ring-opening addition polymerization of an alkylene oxide having 3 or more carbon atoms; or an initiator having 3 or more carbon atoms
- polyoxyalkylene polyol having an oxyethylene group at the molecular terminal for example, an alkylene oxide having 3 or more carbon atoms is subjected to ring-opening addition polymerization in an initiator, followed by A polyoxyalkylene polyol having a terminal oxyethylene block chain obtained by ring-opening polymerization of ethylene oxide; or a polyoxyalkylene polyol having an oxyethylene group in the middle of the molecular chain, and further opening the ethylene oxide.
- examples thereof include polyoxyalkylene polyols having terminal oxyethylene block chains obtained by polymerization.
- the content of total Okishiechiren group of the polyoxyalkylene polyol (100 mass 0/0) in, except foam breaking agent to be described later, particularly preferred arbitrariness is 30 mass% or less preferably fixture 25 wt% or less.
- the lower limit of the content of the terminal oxyethylene group in the polyoxyalkylene polyol is preferably 3% by mass, particularly 5% by mass, except for the foam breaker described later.
- the upper limit is preferably 25% by mass. If the content of the terminal oxyethylene group is less than 3% by mass, form collapse is likely to occur. On the other hand, the form of closed cell exceeds 25 mass 0/0 or cracks form upon many become crushing process, shrinkage, etc. after crushing processing occurs.
- the average number of hydroxyl groups of the high-molecular polyoxyalkylene polyol is preferably 2-6, particularly preferably 3-4. If the average number of hydroxyl groups is 2 or more, the durability of the flexible polyurethane foam and the seating comfort of the seat cushion will be good. In addition, when the average number of hydroxyl groups is 6 or less, the flexible polyurethane foam does not become hard and mechanical properties such as elongation become good.
- the hydroxyl value of the polymer polyoxyalkylene polyol is preferably 10 to 112 mgKOHZg, more preferably 10 to 80 mgKOHZg. 20-60mg KOHZg is particularly preferred 20-40mg KOHZg is most preferred.
- the hydroxyl value is lOmgKOHZg or more, the viscosity of the polyol does not increase and the workability during production is good.
- the hydroxyl value is 112 mgKOH / g or less, the durability of the flexible polyurethane foam and the seating comfort of the seat cushion are improved.
- polyoxyalkylene polyol (a) may be used as at least part of the polymer polyoxyalkylene polyol.
- the polyol (a) is a polyoxyalkylene polyol having a total unsaturation (USV) of not more than 0.08 meqZg and having a content of 10 to 112 mgKOHZg.
- the hydroxyl value of the polyol (a) is preferably 10 to 80 mgKOHZg, preferably 20 to 60 mgKOHZg, preferably 112 mgKOHZg or less. 20-40 mg KOHZg is most preferred.
- the hydroxyl value is preferably 10 to 80 mgKOHZg, preferably 20 to 60 mgKOHZg, preferably 112 mgKOHZg or less. 20-40 mg KOHZg is most preferred.
- the total unsaturation degree of the polyol (a) is 0.08 meqZg or less, preferably 0.07 meqZg or less, and preferably 0.05 meqZg or less.
- any one of the above ring-opening addition polymerization catalysts such as a cesium alkoxide compound, a phosphaze-um compound, and a double metal cyanide catalyst. It is particularly preferable to use any of alkoxide compounds and double metal cyanide catalysts.
- the average number of hydroxyl groups in the polyol (a) is preferably 2-6, more preferably 2-4.
- Polyol (a) is a mixture obtained by mixing two or more polyols having a hydroxyl value of 10 to 80 mgKOHZg and a total unsaturation of 0.08 meqZg or less, even if one kind is used alone. Also good. It may also be produced using a mixture as an initiator.
- the polyol (a) preferably has an oxyethylene group, and the total oxyethylene group content in the polyol (a) (100% by mass) is preferably 30% by mass or less and particularly preferably 25% by mass or less. .
- the content of the oxyethylene group is preferably 30% by mass or less and particularly preferably 25% by mass or less.
- Polyol (a) having an oxyethylene group at the terminal is particularly preferred.
- the lower limit of the content of terminal oxyethylene group in polyol (a) is preferably 3% by mass, and particularly preferably 5% by mass.
- the upper limit is preferably 25% by mass.
- the content of terminal oxyethylene group is If it is less than 3% by mass, foam collapse is likely to occur. On the other hand, when the amount exceeds 25% by mass, the foam has more closed cells and the foam is cracked during the crushing process or shrinkage after the crushing process occurs.
- the content of the polymer polyoxyalkylene polyol (a) in the polymer polyoxyalkylene polyol (100% by mass) is preferably from 30 to L00% by mass, and particularly preferably from 40 to L00% by mass.
- the ratio of the polymer polyoxyalkylene polyol and the polyol (a) is based on the mass of the polyol excluding the polymer particles. Then calculate.
- a polyoxyalkylene polyol having a high oxyethylene group content (hereinafter, also referred to as a foam breaker) is used as at least a part of the polymer polyoxyalkylene polyol. can do.
- the average number of hydroxyl groups is 2 to 8, the hydroxyl value is 20 to: LOOmgKOHZg (more preferably 20 to 80 mgKOH / g), and the oxyethylene group content is 50 to 100 in polyoxyalkylene polyol (100% by mass). mass. A / 0 polyoxyalkylene polyol is preferred.
- the amount of the foam breaker used is preferably from 0.01 to 10 parts by mass, particularly preferably from 0.05 to 10 parts by mass, per 100 parts by mass of the polymer polyoxyalkylene polyol.
- the ratio of the foam breaker in the high molecular weight polyoxyalkylene polyol is based on the mass of the polyol excluding the fine polymer particles. To calculate.
- a polymer-dispersed polyol containing polymer fine particles in a polymer polyoxyalkylene polyol may be used.
- the polymer-dispersed polyol contains fine polymer particles in a polyoxyalkylene polyol matrix, and the fine polymer particles are preferably contained in a dispersed state.
- the polymer fine particles addition polymerization polymers and condensation polymerization polymers are preferable.
- Examples of the polymer fine polymer include addition polymerization polymers and condensation polymerization polymers.
- Addition polymerization polymers include acrylonitrile, styrene, methacrylic acid
- Examples include homopolymers and copolymers of butyl monomers such as esters and acrylates.
- Examples of the polycondensation polymer include polyester, polyurea, polyurethane, melamine resin and the like. Due to the presence of the polymer fine particles, the hydroxyl value of the whole polymer-dispersed polyol can be suppressed from the hydroxyl value of the polyol of the matrix.
- Such a polymer-dispersed polyol can be produced by a known method, and can be produced by polymerizing monomers in a polymer polyoxyalkylene polyol.
- a polymer fine particle solution by separately polymerizing a monomer in a solvent, mix this with a polymer polyoxyalkylene polyol, and then remove the solvent. It can also be prepared by polymerizing monomers in some polymer polyoxyalkylene polyols and mixing the selected polymer-dispersed polyol with other polymer polyoxyalkylene polyols.
- the content of the polymer fine particles contained in the polymer polyoxyalkylene polyol is preferably 50% by mass or less. By setting the content of the polymer fine particles to 50% by mass or less, the viscosity of the polyol does not increase and the workability during production is good.
- the content of the polymer fine particles is preferably 1 to 35% by mass in the total polyol (100% by mass) including the polymer fine particles.
- an aromatic polyisocyanate is preferable.
- the aromatic polyisocyanate include tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymethylene polypolyisocyanate (crude MDI), and the like. These may be a mixture.
- the amount of the polyisocyanate compound used is a numerical value (referred to as isocyanate index) represented by 100 times the number of isocyanate groups relative to the total number of active hydrogens such as polyol and water in the raw material of the flexible polyurethane foam. ) Is preferably 80 to 120, and more preferably 85 to 115.
- a catalyst that promotes the urethanization reaction can be used as the catalyst.
- tertiary amines such as triethylenediamine and bis (2-dimethylaminoethyl) ether
- carboxylic acid metal salts such as potassium acetate and potassium 2-ethylhexanoate
- organometallic compounds such as dibutyltin dilaurate and stannous octoate.
- the amount of catalyst used is preferably from 0.01 to 5 parts by weight, particularly preferably from 0.1 to 1 part by weight, based on 100 parts by weight of the total polyol containing polymer fine particles.
- dimethylpolysiloxane a compound represented by the above formula (1) (hereinafter also referred to as dimethylpolysiloxane) is used.
- the average value of n is about 13 to 2100, preferably 15 to 2100 force S, and 21 to: LOOO force S is particularly preferable.
- the average value of ⁇ to 2100 or less the foam stability during foaming becomes good.
- the average value of ⁇ to 13-2100 it is possible to obtain a load deflection curve force measured using a pressure plate (steel type) compliant with JIS E7104. It can be secured stably. If the average value of ⁇ is 21 ⁇ : L000, the difference in deflection on the caloric pressure side can be secured most stably.
- the average value of ⁇ is based on the kinematic viscosity of dimethylpolysiloxane at 25 ° C. measured using an Ubbelohde viscometer described in JIS ⁇ 8803—1991 5.2.3.
- the “Relationship between molecular weight, degree of polymerization and viscosity of dimethinole silicone” was published in Kunio Ito, “Silicone Handbook”, first edition, Nikkan Kogyo Shinsha, August 31, 1990, p. 116. It can be determined using a graph.
- the amount of dimethylpolysiloxane used is from 0.001 to 1 part by weight, particularly preferably from 0.0003 to 0.1 part by weight, based on 100 parts by weight of the total active hydrogen compound.
- the active hydrogen compound refers to a compound that can react with the polyisocyanate compound among the raw materials of the flexible polyurethane foam. Examples of such a compound include a polyol, a crosslinking agent, and water as a blowing agent. It is.
- a foam stabilizer it is used for production of ordinary flexible polyurethane foam. It is particularly preferable to use a silicone-based foam stabilizer that may be used in combination with the foam stabilizer.
- the amount of foam stabilizer used is 0.001 to 100 parts by mass of the total polyol including polymer fine particles.
- foaming agent one or more foaming agents selected from water and inert gas power are preferred.
- Water is particularly preferred.
- the inert gas include air, nitrogen, carbon dioxide and the like.
- the amount of the blowing agent used is not particularly limited, and when only water is used, 10 parts by mass or less is preferable with respect to 100 parts by mass of the total polyol including polymer fine particles, and 0.1 to 8 parts by mass is particularly preferable. preferable.
- An appropriate amount of a foaming agent other than water may be used in combination in accordance with the requirements such as the expansion ratio.
- a crosslinking agent may be used.
- the crosslinking agent a polyol having an average number of hydroxyl groups of 2 to 8 and a hydroxyl value of 200 to 2000 mgKOHZg is preferable.
- the amount of the crosslinking agent used is preferably from 0.1 to 10 parts by weight, particularly preferably from 0.5 to 10 parts by weight, based on 100 parts by weight of the total polyol containing polymer fine particles.
- emulsifiers such as antioxidants and ultraviolet absorbers
- fillers such as carbonated potassium and barium sulfate
- various known additives such as flame retardants, plasticizers, colorants, and antifungal agents Auxiliaries may be used as necessary.
- the production of flexible polyurethane foams can be done either by injecting the reactive mixture directly into the mold using a low-pressure foaming machine or high-pressure foaming machine (i.e. reactive injection molding) or by placing the reactive mixture in an open mold. It is preferred to be done by injection method. Of the high pressure foaming machines, the usual two liquid mixing type is preferred. Of these, one liquid is a polyisocyanate compound and the other liquid is all raw materials other than the polyisocyanate compound. A mixture of In some cases, a catalyst, a foam breaker (usually used after being dispersed or dissolved in some polyoxyalkylene polyols), etc. may be used as separate components to prepare a total of three types of reactive mixtures.
- the flexible polyurethane foam of the present invention is usually produced by a cold cure method. You may manufacture by methods other than the cold cure method, for example, including a heating process.
- Core density of the flexible polyurethane foam of the present invention in order to apply the signaling seat cushion for an automobile seat preferred that a 30 ⁇ 70KgZm 3 are particularly preferred core density 35 ⁇ 60kgZ m 3. If the core density is 30 kg / m 3 or more, the durability of the flexible polyurethane foam and the ride comfort of the seat cushion will be further improved. Further, if the core density is 70kgZ m 3 or less, when applied to an automobile seat, it does not interfere with fuel efficiency.
- the core density is measured by a method based on JIS K6400 (1997 edition). The core density is measured by removing the skin (edge) from the center of the flexible polyurethane foam and cutting it into a size of 100 mm in length and width and 50 mm in height.
- the flexible polyurethane foam of the present invention is a foam obtained by foaming to a thickness of 100 mm, and the hardness at 25% compression (25% hardness) with respect to the foam thickness is 180 to 500 NZ 314 cm 2 It is particularly preferable that the thickness is 180 to 400 NZ314 cm 2 . 2 If the 5% hardness is 180NZ314cm 2 or higher, the passengers will feel even better. If the 25% hardness is 500 N / 314 cm 2 or less, the flexible polyurethane foam will have a sufficiently large deflection, improving riding comfort. The 25% hardness is measured by a method based on JIS K6400 (1997 edition).
- the flexible polyurethane foam of the present invention is a 25% hardness (ILD) X (N / N) measured according to JIS K6400 (1997 edition) for a flexible polyurethane foam obtained by foaming to a thickness of 100 mm. 314 cm 2), and JIS E7104 (with pressure plate conforming to 2002) (Tekken form), 900 N pressure side obtained from a load one deflection amount curve as measured to give a load mosquitoes ⁇ following constant speed lOmmZs It is preferable that the value Y (pressure side deflection difference) Y (mm) obtained by subtracting the 500N pressure side deflection value from the deflection value satisfies the relational expression expressed by the following equation (2).
- ILD 25% hardness
- the flexible polyurethane foam of the present invention is a foam obtained by foaming to a thickness of 100 mm.
- 500N pressure side obtained from a load-deflection curve measured by measuring the load at a constant speed of 1 OmmZs or less using a pressure plate (Tekken type) conforming to JIS E7104 (2002 edition)
- Tekken type conforming to JIS E7104 (2002 edition)
- the deflection value is 5.0 to 55. Omm
- the value obtained by subtracting the deflection value on the 500N pressure side from the deflection value on the 900N pressure side (pressure side deflection difference) Y (mm) is 22.5-33.0m m It is preferable that 27.0 to 33.0 mm is particularly preferable.
- the deflection value on the pressure side of 500N is 5.0 to 55.0mm
- the deflection value on the pressure side of 500N from the deflection value on the pressure side of 900N when the foam thickness is 100mm is the bow IV
- deflection value (difference in deflection on the pressure side) Y (mm) If it is less than 22.5 mm, the feeling of bottoming out of the sheet is slightly generated, which is not preferable. Also, when the deflection difference on the pressure side (mm) Y exceeds 33. Omm, the posture retention is deteriorated, which is preferable.
- the flexible polyurethane foam of the present invention is a foam obtained by foaming to a thickness of 100 mm, and using a pressure plate (Iken type) conforming to JIS E7104 (2002 edition), it is 1 OmmZs or less.
- 500N calo pressure J deflection value obtained from a load-deflection curve measured by applying a load at a constant speed 8.0 to 55.
- 900N calo pressure J deflection value force is 500N
- the value obtained by subtracting the pressure side deflection value (pressure side deflection difference) Y (mm) is 22.5-33.0 mm, more preferably 27.0-33. Omm.
- the cell size of the obtained flexible polyurethane foam is uniform. do not become.
- a flexible polyurethane foam having non-uniform cells has a load, and a relatively large cell is not easily crushed. Therefore, there is a deflection even under a high load, resulting in a large deflection difference on the pressure side.
- flexible polyurethane foam with non-uniform cell size is excellent in vibration characteristics because it is difficult to resonate.
- dimethylpolysiloxane is used in combination with dimethylpolysiloxane and a foam stabilizer used in the production of ordinary flexible polyurethane foam. Even if it is used, it is possible to produce a flexible polyurethane foam stably, and in particular, the degree of polymerization is 10 or more, which was difficult to produce in the past. It became possible to produce flexible polyurethane foams using dimethylpolysiloxane. In addition, a flexible polyurethane foam can be produced at a lower cost than a conventional production method using a fluorosurfactant.
- the seat for automobiles of the present invention having a seat cushion with a flexible polyurethane foam force that is excellent in vibration characteristics and deflection characteristics under load is excellent in posture retention and support, and has a low feeling of bottoming. Is good.
- Polyol al After propylene oxide was subjected to ring-opening addition polymerization using glycerin as an initiator using a potassium hydroxide catalyst, purification was performed to obtain a polyoxypropylene polyol having a molecular weight of 1000, and then a hydroxyl group.
- Polyoxypropylene ethylene polyol obtained by further subjecting propylene oxide to ring-opening addition polymerization using a cesium catalyst and then subjecting ethylene oxide to ring-opening addition polymerization.
- the number of functional groups is 3, the hydroxyl value is 24 mgKOHZg, the degree of unsaturation is 0.04 meqZg, and the amount of terminal oxyethylene blocking group is 16% by mass.
- Polyol a2 A polymer-dispersed polyol obtained by polymerizing acrylonitrile in the polyol al and having a fine particle polymer amount of 20% by mass.
- Polyol a3 Polyoxypropylene obtained by subjecting propylene oxide to ring-opening addition polymerization using glycerin as an initiator and ring-opening addition polymerization of ethylene oxide at the terminal using a potassium hydroxide and potassium catalyst.
- Polyol a4 Polypropylene polyol having a molecular weight of 1000 was obtained by subjecting propylene oxide to ring-opening addition polymerization using glycerin as an initiator, using a potassium hydroxide hydroxide catalyst, followed by purification. This polyoxypropylene polyol lOOOg was subjected to 1710 g of ring-opening addition polymerization of propylene oxide using a zinc hexanocobaltate complex catalyst with tert-butyl alcohol as a ligand, and then propylene oxide and ethylene.
- Polyol a5 a hydroxyl group obtained by subjecting propylene oxide to ring-opening addition polymerization using glycerin as an initiator and ring-opening addition polymerization of ethylene oxide at the terminal using a potassium hydroxide catalyst.
- a polymer-dispersed polyol obtained by copolymerizing acrylonitrile and styrene in a polyoxypropyleneoxyethylene polyol having a value of 34 mg KOHZg.
- the hydroxyl value is 22mgKOHZg and the amount of fine particle polymer is 35% by mass.
- Foam-breaking agent ring-opening addition polymerization of a mixture of propylene oxide and ethylene oxide with glycerin as an initiator using a potassium hydroxide catalyst, having an average number of functional groups of 3, hydroxyl value S48mgKOHZg, polyoxyethylene Z polyoxypropylene polyol content force 3 ⁇ 40 mass 0/0 of Okishiechiren group.
- Cross-linking agent bl diethanolamine.
- Crosslinking agent b2 Polyoxyethylene polyol having an average number of hydroxyl groups of 4 and a hydroxyl value of 562 mgKOHZg.
- Urethane catalyst cl Diethylene glycol solution of triethylenediamine (trade name “TEDA-L33” manufactured by Tosoh Corporation).
- Urethane catalyst c2 Dipropylene glycol solution of bis-[(2-dimethylamino) ethyl] ether (trade name “TOYOCAT-ET”, manufactured by Tosoh Corporation).
- Urethane catalyst c3 Product name “TOYOCAT — NCT” manufactured by Tosohichi Corporation.
- Silicone type foam stabilizer dl Product name “SZ-1327” manufactured by Nippon Car Company.
- Silicone type foam stabilizer d2 Product name “L-5309” manufactured by Nippon Car Company.
- Dimethylpolysiloxane el-e4 has the structure shown in Table 1.
- Foaming agent f water
- the core density and the core rebound resilience were measured using samples cut into dimensions of 100 mm in length and 50 mm in height, excluding the skin from the center of the foam. [0064]
- the test to obtain the load-deflection curve is based on JIS E7104 (2002 edition). Long diameter A: 300mm, short diameter B: 250mm, thickness C: 35mm or more oval pressure plate (so-called Tekken type) ) 1.
- Load was applied at a constant speed of 7mmZs.
- the deflection value (mm) on the pressure side when a load of 500 N (Newton load) was applied was obtained from the curve of load-deflection.
- the pressure side deflection difference Y (mm) was obtained from the pressure side deflection value (mm) at a load of 500 N and the pressure side deflection value (mm) at a load of 900 N.
- the resonance frequency (Hz), the resonance magnification (absolute displacement measurement), and the 6 Hz transmission rate (absolute displacement measurement) were evaluated.
- Resonance frequency, resonance magnification, and 6Hz transmission rate were measured by a method based on JAS O B407-87 (1987 edition).
- a steel plate (load: 490N) was used as the pressure plate, and the total excitation amplitude was 5 mm.
- Foam breaker 0.5 0.5 0.5 0.5 Folding agent b1 0.2 0.2 0.2 0.2 Flushing agent b2 0.6 0.6 0.6 0.6 Urethane catalyst c1 0.23 0.23 0.23 0.23 Urethane catalyst c2 0.06 0.06 0.06 0.06 0.06 Urethane catalyst c3 0.15 0.15 0.15 0.15 Silicone Foam d 1 0.7 0.7 0.7 Silicone foam stabilizer d2 0.7 Polydimethylsiloxane ⁇ 1 0.01 0.03
- Humid heat pressure box permanent set (WET SET) (%) 16.0 19.1 17.5 17.2
- the flexible urethane foam of the present invention can be preferably applied mainly to seat cushions, seat backs, furniture articles and the like for automobile seats. It should be noted that the entire contents of the specification, claims, and abstract of Japanese Patent Application No. 2004-338815 filed on November 24, 2004 are cited herein as the disclosure of the specification of the present invention. Incorporate.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP05809561A EP1816151A4 (en) | 2004-11-24 | 2005-11-22 | POLYURETHANE-SOFT FOAM, MANUFACTURING METHOD AND CAR SEAT |
JP2006547798A JP4910703B2 (ja) | 2004-11-24 | 2005-11-22 | 軟質ポリウレタンフォーム、その製造方法、および自動車用シート |
CN2005800398501A CN101061155B (zh) | 2004-11-24 | 2005-11-22 | 软质聚氨酯泡沫塑料、其制造方法以及汽车用座垫 |
KR1020077011616A KR101243417B1 (ko) | 2004-11-24 | 2005-11-22 | 연질 폴리우레탄 폼, 그 제조 방법, 및 자동차용 시트 |
US11/752,600 US8324289B2 (en) | 2004-11-24 | 2007-05-23 | Flexible polyurethane foam, process for its production, and seat for automobile |
Applications Claiming Priority (2)
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JP2004338815 | 2004-11-24 | ||
JP2004-338815 | 2004-11-24 |
Related Child Applications (1)
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US11/752,600 Continuation US8324289B2 (en) | 2004-11-24 | 2007-05-23 | Flexible polyurethane foam, process for its production, and seat for automobile |
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WO2006057255A1 true WO2006057255A1 (ja) | 2006-06-01 |
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PCT/JP2005/021480 WO2006057255A1 (ja) | 2004-11-24 | 2005-11-22 | 軟質ポリウレタンフォーム、その製造方法、および自動車用シート |
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US (1) | US8324289B2 (ja) |
EP (1) | EP1816151A4 (ja) |
JP (1) | JP4910703B2 (ja) |
KR (1) | KR101243417B1 (ja) |
CN (1) | CN101061155B (ja) |
TW (1) | TW200631974A (ja) |
WO (1) | WO2006057255A1 (ja) |
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- 2005-11-22 WO PCT/JP2005/021480 patent/WO2006057255A1/ja active Application Filing
- 2005-11-22 EP EP05809561A patent/EP1816151A4/en not_active Withdrawn
- 2005-11-22 KR KR1020077011616A patent/KR101243417B1/ko not_active IP Right Cessation
- 2005-11-22 CN CN2005800398501A patent/CN101061155B/zh not_active Expired - Fee Related
- 2005-11-22 JP JP2006547798A patent/JP4910703B2/ja not_active Expired - Fee Related
- 2005-11-24 TW TW094141315A patent/TW200631974A/zh unknown
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2007
- 2007-05-23 US US11/752,600 patent/US8324289B2/en not_active Expired - Fee Related
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JPH09100336A (ja) * | 1995-08-03 | 1997-04-15 | Sanyo Chem Ind Ltd | ポリオール組成物及びポリウレタンフォームの製法 |
JPH11171961A (ja) * | 1997-12-05 | 1999-06-29 | Sanyo Chem Ind Ltd | 軟質ポリウレタンフォームの製造方法及びポリオール組成物 |
JP2001139653A (ja) * | 1999-09-03 | 2001-05-22 | Toyo Tire & Rubber Co Ltd | シートクッションパッド |
JP2001151841A (ja) * | 1999-10-28 | 2001-06-05 | Air Prod And Chem Inc | 開放セルポリウレタン軟質フォームを製造するためのシリコーン界面活性剤 |
WO2002069765A1 (fr) * | 2001-03-05 | 2002-09-12 | Toyo Tire & Rubber Co., Ltd. | Coussin de siege |
JP2002356528A (ja) * | 2001-05-30 | 2002-12-13 | Kao Corp | ポリウレタンフォームの製造法 |
JP2004167233A (ja) * | 2002-10-29 | 2004-06-17 | Sanyo Chem Ind Ltd | シート用パッド材およびそれに用いる軟質ポリウレタンフォームの製造方法 |
JP2004196875A (ja) * | 2002-12-16 | 2004-07-15 | Bridgestone Corp | 軟質ポリウレタンモールドフォーム及びその製造方法 |
JP2005179653A (ja) * | 2003-11-26 | 2005-07-07 | Asahi Glass Co Ltd | 軟質ポリウレタンフォームおよびその製造方法、該軟質ポリウレタンフォームを用いた自動車用シート |
Non-Patent Citations (1)
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See also references of EP1816151A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130072585A1 (en) * | 2006-12-15 | 2013-03-21 | Evonik Goldschmidt Gmbh | Aqueous cold-cure flexible stabilizer formulations |
US8735458B2 (en) * | 2006-12-15 | 2014-05-27 | Evonik Goldschmidt Gmbh | Aqueous cold-cure flexible stabilizer formulations |
JP2010070657A (ja) * | 2008-09-19 | 2010-04-02 | Kaneka Corp | ポリエーテル類の製造方法 |
JP2011246569A (ja) * | 2010-05-26 | 2011-12-08 | Inoac Corp | リサイクル可能なポリウレタンフォーム、再生ポリオールの製造方法及び再生ポリオールを用いるポリウレタンフォームの製造方法 |
WO2012115113A1 (ja) * | 2011-02-25 | 2012-08-30 | 旭硝子株式会社 | 低反発性軟質ポリウレタンフォームおよびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070219284A1 (en) | 2007-09-20 |
JPWO2006057255A1 (ja) | 2008-06-05 |
EP1816151A1 (en) | 2007-08-08 |
JP4910703B2 (ja) | 2012-04-04 |
US8324289B2 (en) | 2012-12-04 |
KR101243417B1 (ko) | 2013-03-13 |
CN101061155B (zh) | 2010-07-21 |
KR20070085427A (ko) | 2007-08-27 |
CN101061155A (zh) | 2007-10-24 |
TW200631974A (en) | 2006-09-16 |
EP1816151A4 (en) | 2012-07-25 |
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